scholarly journals Suppression of pancreatic beta cell apoptosis by Danzhi Jiangtang capsule contributes to the attenuation of type 1 diabetes in rats

2015 ◽  
Vol 16 (1) ◽  
Author(s):  
Shuguo Zheng ◽  
Mengqiu Zhao ◽  
Yuanjie Wu ◽  
Zheng Wang ◽  
Younan Ren
Keyword(s):  
Type 1 Diabetes ◽  
Beta Cell ◽  
Cell Apoptosis ◽  
Pancreatic Beta Cell ◽  
Beta Cell Apoptosis

scholarly journals The miRNAs miR-211-5p and miR-204-5p modulate ER stress in human beta cells

2019 ◽  
Vol 63 (2) ◽  
pp. 139-149 ◽  
Author(s):  
Fabio Arturo Grieco ◽  
Andrea Alex Schiavo ◽  
Flora Brozzi ◽  
Jonas Juan-Mateu ◽  
Marco Bugliani ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Beta Cell ◽  
Er Stress ◽  
Beta Cells ◽  
Cell Apoptosis ◽  
Interleukin 1 ◽  
Pancreatic Beta Cell ◽  
Beta Cell Apoptosis ◽  
Human Beta Cells

miRNAs are a class of small non-coding RNAs that regulate gene expression. Type 1 diabetes is an autoimmune disease characterized by insulitis (islets inflammation) and pancreatic beta cell destruction. The pro-inflammatory cytokines interleukin 1 beta (IL1B) and interferon gamma (IFNG) are released during insulitis and trigger endoplasmic reticulum (ER) stress and expression of pro-apoptotic members of the BCL2 protein family in beta cells, thus contributing to their death. The nature of miRNAs that regulate ER stress and beta cell apoptosis remains to be elucidated. We have performed a global miRNA expression profile on cytokine-treated human islets and observed a marked downregulation of miR-211-5p. By real-time PCR and Western blot analysis, we confirmed cytokine-induced changes in the expression of miR-211-5p and the closely related miR-204-5p and downstream ER stress related genes in human beta cells. Blocking of endogenous miRNA-211-5p and miR-204-5p by the same inhibitor (it is not possible to block separately these two miRs) increased human beta cell apoptosis, as measured by Hoechst/propidium Iodide staining and by determination of cleaved caspase-3 activation. Interestingly, miRs-211-5p and 204-5p regulate the expression of several ER stress markers downstream of PERK, particularly the pro-apoptotic protein DDIT3 (also known as CHOP). Blocking CHOP expression by a specific siRNA partially prevented the increased apoptosis observed following miR-211-5p/miR-204-5p inhibition. These observations identify a novel crosstalk between miRNAs, ER stress and beta cell apoptosis in early type 1 diabetes.

scholarly journals GLIS3, a Susceptibility Gene for Type 1 and Type 2 Diabetes, Modulates Pancreatic Beta Cell Apoptosis via Regulation of a Splice Variant of the BH3-Only Protein Bim

PLoS Genetics ◽  
2013 ◽  
Vol 9 (5) ◽  
pp. e1003532 ◽  
Author(s):  
Tatiane C. Nogueira ◽  
Flavia M. Paula ◽  
Olatz Villate ◽  
Maikel L. Colli ◽  
Rodrigo F. Moura ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Beta Cell ◽  
Cell Apoptosis ◽  
Splice Variant ◽  
Pancreatic Beta Cell ◽  
Susceptibility Gene ◽  
Beta Cell Apoptosis

scholarly journals Pathological endoplasmic reticulum stress mediated by the IRE1 pathway contributes to pre-insulitic beta cell apoptosis in a virus-induced rat model of type 1 diabetes

Diabetologia ◽  
2013 ◽  
Vol 56 (12) ◽  
pp. 2638-2646 ◽  
Author(s):  
Chaoxing Yang ◽  
Philip diIorio ◽  
Agata Jurczyk ◽  
Bryan O’Sullivan-Murphy ◽  
Fumihiko Urano ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Type 1 Diabetes ◽  
Endoplasmic Reticulum Stress ◽  
Beta Cell ◽  
Rat Model ◽  
Cell Apoptosis ◽  
Beta Cell Apoptosis

Beta-cell apoptosis and defense mechanisms: lessons from type 1 diabetes

Diabetes ◽  
2001 ◽  
Vol 50 (Supplement 1) ◽  
pp. S64-S69 ◽  
Author(s):  
D. L. Eizirik ◽  
M. I. Darville
Keyword(s):  
Type 1 Diabetes ◽  
Beta Cell ◽  
Cell Apoptosis ◽  
Defense Mechanisms ◽  
Beta Cell Apoptosis

scholarly journals The role of apoptosis in pathogenesis of type 1 diabetes mellitus

2010 ◽  
Vol 13 (1) ◽  
pp. 45-49
Author(s):  
Elena Vladimirovna Pekareva ◽  
Tatiana Vasil'evna Nikonova ◽  
Olga Mikhailovna Smirnova
Keyword(s):  
Diabetes Mellitus ◽  
Type 1 Diabetes ◽  
Beta Cell ◽  
Type 1 Diabetes Mellitus ◽  
Beta Cells ◽  
Cell Apoptosis ◽  
Pancreatic Beta Cells ◽  
Beta Cell Apoptosis

Type 1 diabetes mellitus (DM1) is known to be associated with progressive destruction of pancreatic beta-cells. Apoptosis plays the key role in this destructiveprocess. The paper focuses on major mechanisms underlying activation of beta-cell apoptosis and its role in regulation of immune processes inpatients with DM1.

scholarly journals Sustained beta cell apoptosis in patients with long-standing type 1 diabetes: indirect evidence for islet regeneration?

Diabetologia ◽  
2005 ◽  
Vol 48 (11) ◽  
pp. 2221-2228 ◽  
Author(s):  
J. J. Meier ◽  
A. Bhushan ◽  
A. E. Butler ◽  
R. A. Rizza ◽  
P. C. Butler
Keyword(s):  
Type 1 Diabetes ◽  
Beta Cell ◽  
Cell Apoptosis ◽  
Indirect Evidence ◽  
Beta Cell Apoptosis ◽  
Islet Regeneration

scholarly journals THE ROLE OF SURVIVIN AND RAF-1 KINASE AGAINST ENHANCEMENT OF PANCREATIC BETA-CELL APOPTOSIS IN PATIENTS WITH TYPE 2 DIABETES MELLITUS

2018 ◽  
Vol 11 (11) ◽  
pp. 344
Author(s):  
Eva Decroli ◽  
Asman Manaf ◽  
Syafril Syahbuddin ◽  
Sarwono Waspadji ◽  
Dwisari Dillasamola
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Beta Cell ◽  
Cell Apoptosis ◽  
Pancreatic Beta Cell ◽  
Enzyme Linked Immunosorbent Assay ◽  
Beta Cell Apoptosis

Objective: This study aimed to reveal differences in levels of survivin and Raf-1 kinase in prediabetes, controlled Type 2 diabetes mellitus (T2DM), uncontrolled T2DM, and their relationship with hemoglobin A1c (HbA1c) levels and serum triglyceride levels.Methods: This study was an observational study with a cross-sectional design. The study involved 60 people with T2DM who visited the endocrine and metabolic clinic and 30 prediabetes patients. The variables were survivin levels and Raf-1 kinase enzymes that examined using enzyme-linked immunosorbent assay techniques. HbA1c values are measured by high-performance liquid chromatography and triglyceride levels measured by enzymatic method.Results: Average levels of Raf-1 kinase were significantly higher in the prediabetes group, controlled T2DM, and uncontrolled T2DM (11.6±1.4 pg mL, 9.9±1.1 pg/mL, and 9.1±1.5 pg/mL). Survivin was significantly higher in the prediabetes group, controlled T2DM, and uncontrolled T2DM (5.4±0.4 pg mL, 5.0±0.2 pg/mL, and 4.7±0.1 pg/mL). There was no correlation between HbA1c with Raf-1 kinase levels (R=−0.215, p=0.250), but there was a correlation between HbA1c with serum survivin levels (R=−0.6, *p<0.05). There was a correlation between the levels of triglycerides with survivin but not with Raf-1 kinase (R=−0.267, *p=0.039).Conclusion: Survivin and Raf-1 kinase levels are lower in uncontrolled T2DM. This explained the role of survivin and Raf-1 kinase against enhancement of pancreatic beta-cell apoptosis in patients with T2DM.

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